* {
  margin: 0;
  padding: 0;
}

.box {
  color: pink;
  width: 200px;
  height: 100px;
  border: 4px solid #ccc;
}

.pox {
  width: 300px;
  height: 200px;
  border: 4px solid #ccc;
}

.pox .son {
  color: pink;
}

.pox a {
  color: green;
}

.pox a:hover {
  color: yellow;
}

.foo, .boo {
  width: 200px;
  height: 100px;
  background-color: #ddd;
  border: 5px dashed #999;
}
